Ulysse Nardin Blast Tourbillon

The Ulysse Nardin Blast Tourbillon, reference 1723-400-3A/00, has a 45 mm titanium and ceramic case and a flying tourbillon. The case is 12.6 mm thick, with a water-resistance rating of 50 metres. Self-winding calibre UN-172 has a power reserve of 72 hours and a silicon escapement. The openworked dial reveals the geometric architecture beneath a sapphire crystal. A rubber strap is fitted to the watch. The platinum micro-rotor is visible from the front at 12 o'clock.